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Hey Human, If your Facial Emotions are Uncertain, You Should Use Bayesian Neural Networks!

  • Facial emotion recognition is the task to classify human emotions in face images. It is a difficult task due to high aleatoric uncertainty and visual ambiguity. A large part of the literature aims to show progress by increasing accuracy on this task, but this ignores the inherent uncertainty and ambiguity in the task. In this paper we show that Bayesian Neural Networks, as approximated using MC-Dropout, MC-DropConnect, or an Ensemble, are able to model the aleatoric uncertainty in facial emotion recognition, and produce output probabilities that are closer to what a human expects. We also show that calibration metrics show strange behaviors for this task, due to the multiple classes that can be considered correct, which motivates future work. We believe our work will motivate other researchers to move away from Classical and into Bayesian Neural Networks.

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Metadaten
Document Type:Preprint
Language:English
Author:Maryam Matin, Matias Valdenegro-Toro
Pagenumber:10
ArXiv Id:http://arxiv.org/abs/2008.07426
Publisher:arXiv.org
Date of first publication:2020/08/17
Tag:Bayesian Deep Learning; Facial Emotion Recognition; Uncertainty Quantification
Departments, institutes and facilities:Fachbereich Informatik
Dewey Decimal Classification (DDC):0 Informatik, Informationswissenschaft, allgemeine Werke / 00 Informatik, Wissen, Systeme / 006 Spezielle Computerverfahren
Entry in this database:2020/08/26